SAR雷达回波数据的实时采集与存储

随着合成孔径雷达(SAR)系统的发展,高精度的雷达信号回波采集与实时存储成为系统的必然要求。提出了一种基于PCI总线数据采集与实时硬盘存储方法,借助于TS201的FLYBY传输模式向PCI总线传输数据,编写内存驱动程序,建立物理地址和虚拟内存地址的映射。CPU可以直接从内存中读取数据并存盘,减少了CPU和DSP之间的信息交换,大大加快了数据存盘的速度。

The SAR radar echo data real-time acquisition and storage

With the development of synthetic aperture radar (SAR) systems, high-precision radar echo signal acquisition and real-time storage become an inevitable requirement of the system. This paper presents a method based on the PCI bus data acquisition and real-time hard disk storage by means of the TS201 FLYBY transmission mode directly to the PCI bus transfer data, the preparation of the memory driver, the establishment of a physical address and a virtual memory address mapping. The CPU can read data directly from memory and save the file, reducing the exchange of information between the CPU and DSP, greatly accelerated the speed of data archiving.